After years of pushing for ‘secure by default’ web sites, Google will identify insecure sites in the Chrome browser. it will then also mark all sites that have not migrated to HTTPS as “not secure.” This move will coincide with the release of Chrome 68 and will look like this in a user’s browser:

Google has been motivating webmasters to make the change to non-secure web sites a for years now – including hinting at small rankings boost to further incentivize the shift. The campaign has proved successful. According to Google

• Over 68% of Chrome traffic on both Android and Windows is now protected
• Over 78% of Chrome traffic on both Chrome OS and Mac is now protected
• 81 of the top 100 sites on the web use HTTPS by default

Depending upon the size of a site and scope of the project, a migration from HTTP to HTTPS can be quite an undertaking.